img_i2c_transaction_halt
img_i2c_transaction_halt(i2c, !i2c->last_msg);
img_i2c_transaction_halt(i2c, false);
img_i2c_transaction_halt(i2c, !i2c->last_msg);
img_i2c_transaction_halt(i2c, false);
img_i2c_transaction_halt(i2c, !i2c->last_msg);
img_i2c_transaction_halt(i2c, false);
img_i2c_transaction_halt(i2c, !i2c->last_msg);